Anyone who cares about what schools and colleges teach and how their students learn will be interested in the memoir (回忆录) of Ralph W. Tyler, who is one of the most famous men in American education.

It is by no means clear _____the president can do to end the strike.

A lot of language learning, _____ has been discovered, is happening in the first year of life, so parents should talk much to their children during the period.

________he is, he will be thinking of you.

Is this desk____ he bought for me yesterday?

Is this the desk _____ he bought for me yesterday?

①Sorry I’m late, but you cannot imagine ______ trouble I took to find your house.

②—Why didn’t you chat with that friendly foreigner just now?

-- I’d like to have, but the trouble was _____ he said was difficult for me to understand.

③She’ll never forget her stay there _____ she found her son who had gone missing two years before.

④“I’d like to give my thanks to those _____ help my son will be able to survive his terrible disease.” Said the mother on TV.

⑤Some people are worried about the year 2012 _____ they think the earth will end in disaster,

Keys: what; that what; when; with whose; when.

1. This will be particularly true since energy pinch will make it difficult to continue agriculture in the high-energy American fashion that makes it possible to combine few farmers with high yields. 

2. Now since the assessment of intelligence is a comparative matter，we must be sure that the scale with which we are comparing our subjects provides a“valid”or“fair”comparison. 

3. In general，the tests work most effectively when the qualities to be measured can be most precisely defined and least effectively when what is to be measured or predicted can be not well defined.

4. For example，they do not compensate for gross social inequality，and thus do not tell how able an underprivileged youngster might have been had he grown up under more favorable circumstances. 

5.It leads the discussion to extremes at the outset：it invites you to think that animals should be treated either with the consideration humans extend to other humans，or with no consideration at all.

6. But even more important，it was the farthest that scientists had been able to look into the past，for what they were seeing were the patterns and structures that existed 15 billion years ago.

7. Thus it happened that when the new factories that were springing up required labor，tens of thousands of homeless and hungry agricultural workers，with their wives and children，were forced into the cities in search of work，and any work，under any condition，that would keep them alive.

8. As a result of two or three centuries of scientific investigation we have come to believe that nature is understandable in the sense that when we ask her questions by way of appropriate observations and experiments，she will answer truly and reward us with discoveries that endure.

9. These new observational capabilities would result in simply a mass of details were it not for the fact that theoretical understanding has reached the stage at which it is becoming possible to indicate the kind of measurements required for reliable weather forecasting.

10. The story of the discovery of what is now generally called the principle of Archimedes，namely that a solid body when immersed in a liquid loses a portion of its weight of the liquid it displaces，has many different versions，of which the following is one.